title: Ischemia induced by coronary steal through a patent mammary artery side branch: a role for embolization.
abstract: Non-occlusion of the internal mammary artery side branches may cause ischemia due to flow diversion after coronary artery bypass grafting. The authors present the case of a 67-year-old man with recurrent angina after undergoing myocardial revascularization with a left internal mammary artery to left anterior descending bypass. He presented with impaired anterior wall myocardial perfusion in the setting of a patent left internal mammary artery side branch. Effective percutaneous treatment was carried out through coil embolization, with improved flow and clinical symptoms, confirmed through ischemia testing. Coronary steal through a patent mammary artery side branch is a controversial phenomenon and this type of intervention should be considered only in carefully selected patients.
authors.affiliation: Serviço de Cardiologia do Centro Hospitalar Tâmega e Sousa, Penafiel, Portugal. numoreno@yahoo.com
authors.forename: Nuno
authors.initials: N
authors.lastname: Moreno
authors.forename: Alexandra
authors.initials: A
authors.lastname: da Silva Castro
authors.forename: Adriana
authors.initials: A
authors.lastname: Pereira
authors.forename: João Carlos
authors.initials: JC
authors.lastname: Silva
authors.forename: Pedro Bernardo
authors.initials: PB
authors.lastname: Almeida
authors.forename: Aurora
authors.initials: A
authors.lastname: Andrade
authors.forename: Maria Júlia
authors.initials: MJ
authors.lastname: Maciel
authors.forename: Paula
authors.initials: P
authors.lastname: Pinto
mesh_terms: D000368:Aged; D003327:Coronary Disease / Q000150:complications; D004621:Embolization, Therapeutic; D006801:Humans; D008297:Male; D008323:Mammary Arteries; D017202:Myocardial Ischemia / Q000209:etiology* / Q000628:therapy*
keywords: Coil embolization; Coronary steal syndrome; Embolização; Patent left internal mammary artery side branch; Ramo patente da artéria mamária interna; Síndrome do roubo coronário